1390, "faculty of understanding," from O.Fr.
intelligence (12c.), from L.
intelligentia "understanding," from
intelligentem (nom.
intelligens) "discerning," prp. of
intelligere "to understand, comprehend," from
inter- "between" +
legere "choose, pick out, read" (see
lecture). Meaning superior understanding, sagacity" is from c.1430. Sense of "information, news" first recorded c.1450, especially "secret information from spies" (1587).
Intelligent is a 1509 back-formation;
Intelligentsia "the intellectual class collectively" is 1907, from Rus.
intelligyentsia, from Latin.
Intelligence quotient first recorded 1922 (see
I.Q.).